GB1219690A - Improvements in or relating to a handling device for the handling of loads - Google Patents

Abstract

1,219,690. Walking mechanism. MACGREGOR COMARAIN. 9 Oct., 1968 [13 Oct., 1967; 19 Sept., 1968], No. 47781/68. Heading B7H. [Also in Division B8] A device for transporting a load 13 comprises an inflatable chamber 1 positioned between the load and the ground 11, an upper wall 12 of the chamber being secured to a load-supporting platform 6 mounted on legs 14, 15, and inextensible members 17 articulating the wall 12 to a parallel lower wall 10 of the chamber 1, inflation of the latter causing the wall 10 to engage the ground and move the load and platform upwardly and to the left in the Figure. With deflation of the chamber, the legs 14, 15 again engage the ground and a spring 16 pulls the lower wall 12 of the chamber to the left to assume the position shown, wherein the device is ready for another cycle, inflation and deflation being manually controlled by a valve 4 on the platform. In the embodiment of Figs. 8 and 9 (not shown), a platform is mounted on four inflatable chambers in square formation, each pair of diagonal chambers having their inextensible members spring loaded for platform movement in opposite directions, one diagonal pair of chambers when inflated taking the place of the platform legs of the first embodiment. In the embodiment of Figs. 10, 11 (not shown), a load platform is provided with a plurality of inflatable chambers such that movement of the platform in four directions at right angles is obtainable. Alternatively, the platform may be inverted so that a load is moved by direct contact with the chambers. In the embodiment of Figs. 13-16 (not shown), pneumatic traction rams and cables within each inflatable chamber control movement between the upper and lower surfaces of the chamber so that during inflation and deflation the chamber moves from an inclination one way to an inclination the opposite way. In the embodiment of Figs. 17-25 (not shown), the load platform includes retractable castors for positioning, and the inflatable chambers merely move up and down, an air bed being formed between the platform and the top of the chambers so that the platform can slide relative thereto during arcuate movement of the inextensible members as inflatable traction bags are operated. The latter comprise bags around which traction cables are wound, each cable being tensioned as its associated bag is inflated.